It is shown that the velocities and attenuations of P1 and S waves are influenced by various parameters, especially CO2 saturation and pore fluid parameters, such as density and velocity. In addition, the modified models of live oil&rsquo:s velocity and density were proposed, which were verified by experimental data under the consideration of CO2 dissolution. Based on this, we analyzed the sensitivity of the first compressional wave (P1) and the shear wave (S) to various physical parameters. In this paper, we resorted to Lo&rsquo:s model to analyze the dispersion and attenuation characteristics of unsaturated porous media. Carbon dioxide geological utilization and storage (CGUS) is an effective way to mitigate climate warming.
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